Location map for Gullwing and Tot Lakes pegmatites is given in Figure 5 and tables of assays and UTM coordinates are given in Tables 1 and 2.

Mapping on Tot Lake pegmatite revealed eye-popping lithium and tantalum mineralization with pale green megacrystic spodumene blades up to 75 cm long and 15 cm wide identified next to megacrystic K-feldspar crystals in historical trench 3 (Power Metals Corp, press release dated July 11, 2018). The Ta-oxide crystals are up to 1 by 2 cm in size and are some of the largest Ta-oxide crystals in pegmatites in the province of Ontario. Typically, Ta-oxide minerals are 1 to 2 mm in size. In addition to lithium and tantalum mineralization, the cesium mineralization is also impressive at Tot Lake. Pollucite (Cs ore mineral) at Tot Lake is concentrated in a 1 by 5 m pod near the southwestern end of the pegmatite dyke where it comprises 32 vol% of the pod (Breaks et al., 2014). Pollucite is rare in nature and is only known at four other pegmatite localities in Ontario (Breaks et al., 2014). Pollucite is an indicator mineral for extreme chemical fractionation.

Quality ControlThe grab samples were shipped to SGS analytical lab in Lakefield, Ontario by Manitoulin Transport. SGS analytical lab in Lakefield has ISO 17025 certification. Every 20 samples included one external quartz blank and one external lithium standard. The ore grade Li2O% was prepared by sodium peroxide fusion with analysis by ICP-OES with a detection limit of 0.002 % Li2O. A QA/QC review of the standards and blanks for this mapping program indicate that they passed and the assays are accurate and not contaminated.

Terms of the Joint-VentureMGX currently has a paid 20% working interest in five lithium hard rock properties in Ontario controlled by Power Metals Inc as well as any additional properties acquired by Power Metals prior to August 2020. MGX also maintains the right to acquire an additional 15% working interest, for a total of 35%, in each of the hard rock lithium properties by making a one-time payment of $10M prior to August 2020. MGX currently holds an option to acquire 10,000,000 shares of Power Metals at $0.65 (see press release dated August 2, 2017).

Qualified PersonAndris Kikauka (P. Geo.), Vice President of Exploration for MGX Minerals, has prepared, reviewed and approved the scientific and technical information in this press release. Mr. Kikauka is a non-independent Qualified Person within the meaning of National Instrument 43-101 Standards.

About MGX MineralsMGX Minerals is a diversified Canadian resource and technology company with interests in global advanced material, energy and water assets.

Forward-Looking StatementsThis press release contains forward-looking information or forward-looking statements (collectively "forward-looking information") within the meaning of applicable securities laws. Forward-looking information is typically identified by words such as: "believe", "expect", "anticipate", "intend", "estimate", "potentially" and similar expressions, or are those, which, by their nature, refer to future events. The Company cautions investors that any forward-looking information provided by the Company is not a guarantee of future results or performance, and that actual results may differ materially from those in forward-looking information as a result of various factors. The reader is referred to the Company's public filings for a more complete discussion of such risk factors and their potential effects which may be accessed through the Company's profile on SEDAR at www.sedar.com.